EP0103262B1 - Lathe spindle with a chuck compensated for centrifugal forces - Google Patents

Lathe spindle with a chuck compensated for centrifugal forces Download PDF

Info

Publication number
EP0103262B1
EP0103262B1 EP83108787A EP83108787A EP0103262B1 EP 0103262 B1 EP0103262 B1 EP 0103262B1 EP 83108787 A EP83108787 A EP 83108787A EP 83108787 A EP83108787 A EP 83108787A EP 0103262 B1 EP0103262 B1 EP 0103262B1
Authority
EP
European Patent Office
Prior art keywords
chuck
spindle
flange
lathe spindle
chuck body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83108787A
Other languages
German (de)
French (fr)
Other versions
EP0103262A2 (en
EP0103262A3 (en
Inventor
Werner Dr.-Ing. Felten
Walter Honroth
Siegfried Kuhn
Hermann Schulten
Bruno Zeller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAG IAS GmbH Eislingen
Original Assignee
Oerlikon Boehringer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Boehringer GmbH filed Critical Oerlikon Boehringer GmbH
Publication of EP0103262A2 publication Critical patent/EP0103262A2/en
Publication of EP0103262A3 publication Critical patent/EP0103262A3/en
Application granted granted Critical
Publication of EP0103262B1 publication Critical patent/EP0103262B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/14—Chucks with simultaneously-acting jaws, whether or not also individually adjustable involving the use of centrifugal force
    • B23B31/141—To counterbalance the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/08—Compensation of centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/122—Safety devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/24—Chucks or sockets by centrifugal force
    • Y10T279/243—Chucks or sockets by centrifugal force to counterbalance jaws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2552—Headstock
    • Y10T82/2562—Spindle and bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/26—Work driver

Definitions

  • the invention relates to a lathe spindle according to the preamble of claim 1.
  • the invention has for its object to design the lathe spindle of the type mentioned in such a way that the overhang of the chuck is as small as possible.
  • the chuck or at least part of the chuck is integrated into the lathe spindle, so that the overhang of the chuck can be reduced by the axial length of the chuck base.
  • the chuck body can be fastened to the chuck base integrated into the spindle flange by connecting elements such as bolts, forms a compact unit so that there is no joint between the spindle flange and the chuck base and there is high rigidity in this area.
  • Another advantage of the shorter length is that it is now possible to completely cover the joint between the spindle flange and the chuck body, including the radial grooves for the centrifugal weights, by means of a ring that is attached to the machine housing and thus protect it against coolants and chips. Since the outside diameters of lathe chucks are standardized, a single, universal cover ring is sufficient, which does not have to be removed when changing the chuck due to the easy-to-use O-ring seal to the chuck body.
  • the rotating spindle 11 of a lathe is supported by bearings 12 in the machine housing 20 and has a flange 13 for the releasable fastening of a chuck with centrifugal force compensation.
  • the bottom of the chuck is formed in one piece together with the spindle flange 13.
  • radial grooves 14 (FIG. 2) are formed on the side facing the chuck body 15, in which the sliders 22 are slidably guided, which act on the clamping jaws 16 via deflection levers and base jaws, not shown, in the chuck body 15.
  • a ring 17 is fastened, which extends over the flange 13 to the chuck body 15, on the circumference of which the ring 17 abuts by means of an O-ring.
  • the chuck body 15 there are those parts which are required for the adjustment of the clamping jaws 16 by means of a draw tube inserted into the spindle bore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Turning (AREA)

Description

Die Erfindung betrifft eine Drehmaschinenspindel entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a lathe spindle according to the preamble of claim 1.

Es ist bekannt, dass es der Übergang zu höheren Drehzahlen bei Drehmaschinen erforderlich machte, einen Fliehkraftausgleich zu schaffen, um eine radiale Auswärtsbewegung der Spannbakken und damit ein Lösen eines Werkstückes zu verhindern. Hierzu sind, wie etwa im DE-GM 76 13 635.1 beschrieben, am Flansch der Drehspindel einer Drehmaschine lösbar befestigbare Spannfutter bekannt, die in ihrem Futterboden radiale Nuten aufweisen, in denen Gleitstücke verschiebbar gelagert sind. Diese wirken über Umlenkhebel auf die Grundbacken der Spannbacken als Fliehkraftausgleichsgewichte und drücken die Grundbacken aufgrund ihrer eigenen, radial nach aussen gerichteten Bewegung nach innen.It is known that the transition to higher speeds in lathes made it necessary to compensate for centrifugal force in order to prevent the clamping jaws from moving radially outward and thus preventing a workpiece from being released. For this purpose, as described in DE-GM 76 13 635.1, releasably attachable chucks are known on the flange of the rotating spindle of a lathe, which have radial grooves in their base, in which sliders are slidably mounted. These act on the base jaws of the clamping jaws as centrifugal force balancing weights via deflection levers and press the base jaws inwards due to their own, radially outward movement.

Bei Drehmaschinen besteht das grundsätzliche Problem des Überhanges des Spannfutters in bezug auf hinter dem Spindelflansch befindlichen Lager. Je grösser der Überhang ist, desto mehr wird das Rattern der Spindel begünstigt und die Bearbeitungsgenauigkeit verringert. Da die zuvor erwähnten Aufspannfutter mit Fliehkraftausgleich wegen der Gleitstücke und der Umlenkhebel eine relativ grosse axiale Länge haben, ergeben sich ungünstige Bedingungen hinsichtlich des Überhanges des Aufspannfutters.With lathes there is the fundamental problem of the overhang of the chuck in relation to the bearings located behind the spindle flange. The larger the overhang, the more the chattering of the spindle is promoted and the machining accuracy is reduced. Since the aforementioned chucks with centrifugal force compensation have a relatively large axial length because of the sliding pieces and the deflection levers, unfavorable conditions arise with regard to the overhang of the chuck.

Der Erfindung liegt die Aufgabe zugrunde, die Drehmaschinenspindel der eingangs genannten Art so auszubilden, dass der Überhang des Aufspannfutters möglichst gering ist.The invention has for its object to design the lathe spindle of the type mentioned in such a way that the overhang of the chuck is as small as possible.

Gelöst wird diese Aufgabe gemäss der Erfindung durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale.This object is achieved according to the invention by the features specified in the characterizing part of claim 1.

Zweckmässige Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Useful embodiments of the invention result from the subclaims.

Durch die einstückige Ausbildung des Spindelflansches und des Futterbodens wird das Aufspannfutter bzw. zumindestein Teil des Aufspannfutters in die Drehspindel integriert, so dass der Überhang des Aufspannfutters um die axiale Länge des Futterbodens verringert werden kann.Due to the integral design of the spindle flange and the chuck base, the chuck or at least part of the chuck is integrated into the lathe spindle, so that the overhang of the chuck can be reduced by the axial length of the chuck base.

Dadurch, dass der Futterkörper durch Verbindungselemente wie Bolzen an dem am Spindelflansch integrierten Futterboden befestigbar ist, wird eine kompakte Einheit gebildet, so dass keine Trennfuge zwischen Spindelflansch und Futterboden entsteht und sich in diesem Bereich eine hohe Steifigkeit ergibt.The fact that the chuck body can be fastened to the chuck base integrated into the spindle flange by connecting elements such as bolts, forms a compact unit so that there is no joint between the spindle flange and the chuck base and there is high rigidity in this area.

Ein weiterer Vorteil der geringeren Länge liegt darin, dass es nun möglich ist, die Fuge zwischen Spindelflansch und Futterkörper einschliesslich der radialen Nuten für die Fliehkraftgewichte komplett mittels eines Ringes, der am Maschinengehäuse befestigt ist, abzudecken und damit gegen Kühlmittel und Späne zu schützen. Da die Aussendurchmesser von Drehmaschinenfuttern genormt sind, genügt ein einziger, universeller Abdeckring, der aufgrund der einfach zu handhabenden O-Ring-Dichtung zum Futterkörper auch beim Futterwechsel nicht entfernt werden muss.Another advantage of the shorter length is that it is now possible to completely cover the joint between the spindle flange and the chuck body, including the radial grooves for the centrifugal weights, by means of a ring that is attached to the machine housing and thus protect it against coolants and chips. Since the outside diameters of lathe chucks are standardized, a single, universal cover ring is sufficient, which does not have to be removed when changing the chuck due to the easy-to-use O-ring seal to the chuck body.

Eine solche Abdeckung war beim Stand der Technik aus zwei Gründen nicht möglich: Erstens wären aufgrund der grösseren axialen Länge der Einheit und damit des Abdeckringes die Fliehkräfte am freien Ende des Abdeckringes zu gross geworden, um ein Aufplatzen des Ringes und damit eine Gefährdung der Bedienungsperson auszuschliessen und zweitens waren wegen des zusätzlichen Futterbodens die Umlenkhebel entsprechend länger als beim Erfindungsgegenstand, was zwangsweise zu grösserem Verschieben wegen der Fliehkraftgewichte führte und damit eine Abdeckung unmittelbar ausserhalb des Futterkörpers unmöglich machte.Such a cover was not possible in the prior art for two reasons: First, due to the greater axial length of the unit and thus the cover ring, the centrifugal forces at the free end of the cover ring would have become too great to prevent the ring from bursting and thus endangering the operator and secondly, because of the additional forage base, the bellcranks were correspondingly longer than in the subject matter of the invention, which inevitably led to greater displacement due to the centrifugal force weights and thus made it impossible to cover directly outside the forage body.

Die Erfindung wird nachstehend anhand der Fig. 1 und 2 beispielsweise erläutert. Es zeigt:

  • Fig. 1 einen Axialschnitt der Drehmaschinenspindel im Spindelflanschbereich und
  • Fig. 2 eine Aufsicht auf den Spindelflansch.
The invention is explained below with reference to FIGS. 1 and 2, for example. It shows:
  • Fig. 1 shows an axial section of the lathe spindle in the spindle flange area and
  • Fig. 2 is a plan view of the spindle flange.

Die Drehspindel 11 einer nicht näher gezeigten Drehmaschine ist durch Lager 12 im Maschinengehäuse 20 gelagert und weist einen Flansch 13 zur lösbaren Befestigung eines Aufspannfutters mit Fliehkraftausgleich auf. Der Boden des Futters ist zusammen mit dem Spindelflansch 13 einstükkig ausgebildet. In diesem Spindelflansch 13 sind auf der dem Futterkörper 15 zugewandten Seite radiale Nuten 14 (Fig. 2) ausgebildet, in denen die Gleitstücke 22 verschiebbar geführt sind, die über nicht gezeigte Umlenkhebel und Grundbacken im Futterkörper 15 auf die Aufspannbacken 16 wirken.The rotating spindle 11 of a lathe, not shown in more detail, is supported by bearings 12 in the machine housing 20 and has a flange 13 for the releasable fastening of a chuck with centrifugal force compensation. The bottom of the chuck is formed in one piece together with the spindle flange 13. In this spindle flange 13, radial grooves 14 (FIG. 2) are formed on the side facing the chuck body 15, in which the sliders 22 are slidably guided, which act on the clamping jaws 16 via deflection levers and base jaws, not shown, in the chuck body 15.

Zwischen dem dem Spindelflansch 13 nächstgelegenen Lager 12 und dem Flansch 13 befindet sich eine Labyrinth-Dichtung 18, 19, die am Maschinengehäuse 20 befestigt ist.Between the bearing 12 closest to the spindle flange 13 and the flange 13 there is a labyrinth seal 18, 19 which is fastened to the machine housing 20.

Ebenfalls im Zwischenraum zwischen dem Gehäuse 20 und dem Flansch 13 ist ein Ring 17 befestigt, der über den Flansch 13 bis zum Futterkörper 15 reicht, an dessen Umfang der Ring 17 mittels eines O-Dichtringes anliegt.Also in the space between the housing 20 and the flange 13, a ring 17 is fastened, which extends over the flange 13 to the chuck body 15, on the circumference of which the ring 17 abuts by means of an O-ring.

In dem Futterkörper 15 befinden sich diejenigen Teile, die zur Verstellung der Spannbacken 16 mittels eines in die Spindelbohrung eingesetzten Zugrohres erforderlich sind.In the chuck body 15 there are those parts which are required for the adjustment of the clamping jaws 16 by means of a draw tube inserted into the spindle bore.

Claims (2)

1. Lathe spindle with a centrifugal force balancing chuck, in which centrifugal weights (22) movably mounted in radial grooves (14) operate to balance centrifugal force through pivotable arms on the base cheeks of the chuck jaws (16), characterised in that the grooves (14) are arranged in the spindle flange (13) and the chuck body (15) is releasably secured directly on the spindle flange (13).
2. Lathe spindle according to claim 1, characterised by a cover ring (17) seated on the periphery of the spindle flange (13) and extending beyond the separable joint between the spindle flange (13) and the chuck body (15), the cover ring fitting closely around the periphery of the chuck body (15) by means of an O-ring seal (21).
EP83108787A 1982-09-13 1983-09-06 Lathe spindle with a chuck compensated for centrifugal forces Expired EP0103262B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3233914A DE3233914C2 (en) 1982-09-13 1982-09-13 Lathe spindle with centrifugal force compensating chuck
DE3233914 1982-09-13

Publications (3)

Publication Number Publication Date
EP0103262A2 EP0103262A2 (en) 1984-03-21
EP0103262A3 EP0103262A3 (en) 1985-09-25
EP0103262B1 true EP0103262B1 (en) 1988-01-07

Family

ID=6173085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108787A Expired EP0103262B1 (en) 1982-09-13 1983-09-06 Lathe spindle with a chuck compensated for centrifugal forces

Country Status (4)

Country Link
US (1) US4696209A (en)
EP (1) EP0103262B1 (en)
JP (1) JPS5964209A (en)
DE (3) DE3233914C2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822506C1 (en) * 1988-07-04 1989-07-27 Paul Forkardt Gmbh & Co Kg, 4000 Duesseldorf, De
JPH0448201U (en) * 1990-08-27 1992-04-23
US5927169A (en) * 1996-10-09 1999-07-27 Hinson; Ronald L. Lathe draw tube adaptor
US5947989A (en) * 1996-12-12 1999-09-07 United States Surgical Corporation Method and apparatus for transmyocardial revascularization
US6723167B2 (en) * 2000-12-21 2004-04-20 Intel Corporation Spindle sleeve for coater/developer
DE602005019387D1 (en) * 2004-03-31 2010-04-01 Eastland Medical Systems Ltd DRIVE
CN101733417B (en) * 2010-02-10 2011-05-11 辽宁西格马数控机床有限公司 Numerical control vertical lathe spindle assembly
CN102962785A (en) * 2011-08-30 2013-03-13 浙江瑞远机床有限公司 Numerical-control lathe main spindle box assembling clamp and assembling method
DE102014006151B4 (en) 2014-04-25 2021-08-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for measuring the concentricity of a machine tool and machine tool designed to carry out the method
US10245648B2 (en) * 2016-04-30 2019-04-02 Citic Dicastal Co., Ltd Aluminum alloy hub lathe fixture
CN110799396B (en) 2017-06-28 2021-12-03 弗克斯特有限公司 Method and device for determining a position deviation of a rotating body
CN110480041B (en) * 2018-05-15 2024-06-14 西安西玛电机有限公司 One-knife turning device for motor flange end cover
CN112170878B (en) * 2020-09-21 2021-08-27 浙江京速机床附件有限公司 Compensation type finger-pressing chuck

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698185A (en) * 1954-12-28 Combinationhwolkp
US377779A (en) * 1888-02-14 Lathe
US1250556A (en) * 1916-03-25 1917-12-18 Bullard Machine Tool Company Work-spindle adjustment.
DE388960C (en) * 1923-03-22 1924-01-29 Wesselmann Bohrer Co Werkzeug Chucks, in particular lathe chucks
DE724892C (en) * 1937-09-11 1942-09-09 Deutschland G M B H Maschf Spindle flange connection on machine tools
US2493574A (en) * 1946-06-13 1950-01-03 Niles Bement Pond Co Lathe work driver
US2697610A (en) * 1948-10-04 1954-12-21 Stanford Roberts Mfg Company Radially reciprocating jaw chuck with fluid pressure actuator
US3108412A (en) * 1960-10-13 1963-10-29 Erickson Tool Co Chuck for gears and the like
DE1988850U (en) * 1968-04-26 1968-07-04 Wohlenberg Kommanditgesellscha INTERCHANGEABLE DISC FOR LATHE.
FR2248901A1 (en) * 1973-10-24 1975-05-23 Precision Industrielle Lathe chuck with counterbalanced pivoting jaws - uses net moment of centrifugal force on each arm to keep chuck tight
DE2832297C2 (en) * 1978-07-22 1986-09-25 Günter Horst 7927 Sontheim Röhm Chuck
US4437675A (en) * 1982-07-12 1984-03-20 The Warner & Swasey Company Chuck with centrifugal force compensation

Also Published As

Publication number Publication date
EP0103262A2 (en) 1984-03-21
JPS5964209A (en) 1984-04-12
JPS6111726B2 (en) 1986-04-04
DE3375089D1 (en) 1988-02-11
US4696209A (en) 1987-09-29
DE8225755U1 (en) 1985-08-08
EP0103262A3 (en) 1985-09-25
DE3233914A1 (en) 1984-03-15
DE3233914C2 (en) 1986-02-13

Similar Documents

Publication Publication Date Title
EP0103262B1 (en) Lathe spindle with a chuck compensated for centrifugal forces
EP1768808B1 (en) Tool adapter
DE2621201B2 (en) Impeller for a turbomachine
EP0158182A2 (en) Milling and boring head for a machine tool
EP0816703A2 (en) Conical screw connection for lammelae shaft coupling
EP3655678B1 (en) Damping device and tool-holding device having such a damping device
DE1425968A1 (en) Fluid bearings
DE3140368A1 (en) Propeller shaft
DE102018102327B4 (en) Force measuring device for recording machining forces on a machine tool and machine tool with force measuring device
DE2921284A1 (en) REVOLVER FOR LATHE
DE102011052308B4 (en) Clamping device for a balancing machine
EP0171574B1 (en) Reamer holder
DD285478A7 (en) TOOL COUPLING, ESPECIALLY FOR ROTATING COUPLING TOOLS
DE8422976U1 (en) Tool holder with radial adjustment device for a tool, in particular a rotating tool
DE2633433A1 (en) DEVICE FOR CENTRIC CLAMPING OF RING-SHAPED WORKPIECES
EP1543904A2 (en) Tool holder
DE1935019A1 (en) Machine tool
DE10305714B4 (en) force feed
DE3430380C2 (en)
DE202021001751U1 (en) Multifunctional spindle for a machine tool
DE3524434C1 (en) Machine-tool spindle and matching tool holder
DE3804962C1 (en) Hydro-mechanical tool-clamping system for hollow work spindles carried in rolling bearings, with integrated oil lubrication through the spindle
DE2946471C2 (en) Hydrostatic axial bearing of a rotor
DE29709802U1 (en) Device for receiving and holding a hollow cylindrical pressure sleeve
DE696744C (en) Piston engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI SE

17P Request for examination filed

Effective date: 19840329

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB LI SE

17Q First examination report despatched

Effective date: 19870317

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3375089

Country of ref document: DE

Date of ref document: 19880211

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: BOEHRINGER WERKZEUGMASCHINEN GMBH

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900216

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19900219

Year of fee payment: 7

Ref country code: CH

Payment date: 19900219

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900228

Year of fee payment: 7

Ref country code: DE

Payment date: 19900228

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19900930

Ref country code: CH

Effective date: 19900930

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910530

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83108787.9

Effective date: 19910527